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numerical simulation of mechanical mixing in high solid

numerical simulation of mechanical mixing in high solid

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Jan 01, 2011  The study of flow fields caused by mechanical mixing will help to improve the design of HSAD on a commercial scale. Computational fluid dynamics (CFD) can assist in studying mixing through numerical simulation of fluid motion (Paul et al., 2004). CFD can allow determination of flow characteristics of a liquid/slurry system with a much lower ...

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Computational fluid dynamics (CFD) was employed to study mixing performance in high solid anaerobic digester (HSAD) with A-310 impeller and helical ribbon. A mathematical model was constructed to assess flow fields. Good agreement of the model results with experimental data was obtained for the A-31

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A systematic comparison for the interrelationship of power number, flow number and Reynolds number was simulated in a digester with less than 5% TS and 10% TS (total solids). The simulation results suggested a great potential for using the helical ribbon mixer in the mixing of high solids digester.

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Request PDF Numerical simulation of mechanical mixing in high solid anaerobic digester Computational fluid dynamics (CFD) was employed to study mixing performance in high solid anaerobic ...

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A computational fluid dynamics (CFD) model that simulates mechanical mixing for high-solids anaerobic digestion was developed. Numerical simulations of mixing manure slurry which exhibits non-Newtonian pseudo-plastic fluid behavior were performed for six designs: (i) one helical ribbon impeller; (ii) one anchor impeller; (iii) one curtain-type impeller; (iv) three counterflow (CF-2) impellers ...

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CFD simulation of mixing for high‐solids anaerobic ...

Mar 01, 2012  A computational fluid dynamics (CFD) model that simulates mechanical mixing for high‐solids anaerobic digestion was developed. Numerical simulations of mixing manure slurry which exhibits non‐Newtonian pseudo‐plastic fluid behavior were performed for six designs: (i) one helical ribbon impeller; (ii) one anchor impeller; (iii) one curtain‐type impeller; (iv) three counterflow (CF‐2 ...

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Aug 01, 2021  Numerical simulation of mechanical flocculation in water treatment. ... The swirling flow should be considered in a mechanical mixing of flocculators. ... large floc sizes correspond to the high efficiency of suspended solids removal and the phosphorous adsorption. Therefore, the flocculation performance is enhanced by the decreasing of inlet ...

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Numerical simulation of mixing uniformity of composite ...

May 16, 2019  Numerical simulation of mixing uniformity of composite solid waste and melt ... Numerical simulation of solid-liquid suspension characteristics and flow field in stirred tank with high solids content [D], Beijing: Beijing University of chemical technology, 2006.

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Numerical simulations of high Knudsen Number gas flows

The DSMC method was employed to explore mixing gas flows in two dimensional microchannels. Mixing of two gas streams (H 2 and O 2) was considered within a microchannel. The effect of the inlet-outlet pressure difference, the pressure ratio of the incoming streams and the accommodation coefficient of the solid wall on mixing length were all ...

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Numerical simulation of free flowing particles mixing in V ...

Mar 25, 2019  The aim of this study is to present a novel approach for analyzing the pharmaceutical solid mixing performance of monodisperse particles by a numerical simulation using the mathematical model of rigid solid objects “for a large span of time reached 20 min”. In order to ensure the viability of a numerical simulation, an experimental study of a binary mixture of monodisperse particles ...

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Numerical Simulation of Gas-Solid Flow in a Fluidized Bed ...

Numerical Simulation of Gas-Solid Flow in a Fluidized Bed with Different Inlet Flow Locations By Feng Feng Master of Science in Mechanical Engineering Research Advisor: Professor Ramesh K. Agarwal Fluidized beds are widely used in chemical and mineral industries due to their advantage of high efficiency and low pollution.

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Numerical simulation of granular mixing in static mixers ...

Jun 19, 2019  A static mixer is a fidelity engineered device for the continuous mixing of fluid/solid materials. To meet the requirements for mixing purpose, a proper design of the static mixer is important. In this study, we proposed various designs of static mixer based on the blade geometry. Six blade patterns including four twisted blades, four elliptical blades and other four combined geometries of two ...

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(PDF) Simulation of mechanical mixing in anaerobic digesters

Compared to the mechanical mixing, gas mixing had lower percentage of dead zones (about 5% against 50%), larger maximum velocity (about 3 m/s against 1 m/s) as well as larger turbulent kinetic ...

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Numerical Simulation of Ice Slurry Flow in improved Plate ...

School of Mechanical Engineering 2021 Numerical Simulation of Ice Slurry Flow in improved Plate Heat Exchanger Geometries with Consideration of different Phase Interaction Parameters Shaimaa Hefny Badawi Technical University Dresden, Bitzer-Chair of Refrigeration, Cryogenics and Compressor Technology, Germany, [email protected]

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RESEARCH ON NUMERICAL SIMULATION OF FORMING

RESEARCH ON NUMERICAL SIMULATION OF FORMING PROCESS FOR SINGLE SCREW EXTRUDER Gou Yanan1,Zhao Peng1,2,Ning Tingzhou1* 1 College of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang 277160, China 2 School of Mechanical Engineering, University of Jinan, Jinan 250022, China E-mail: [email protected]

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Numerical simulation of convection and mixing in magma ...

Nov 03, 2006  [1] Magma convection and mixing, and periodic refilling, commonly occur in magma chambers. We show here that the presence of CO 2 in the refilling magma is a very efficient mean of inducing buoyant-driven plume rise and large scale convection. Numerical simulations performed with an appositely developed code for the transient 2D dynamics of multicomponent compressible to

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Direct numerical simulation of incompressible spatially ...

Direct numerical simulation of incompressible spatially developing turbulent mixing layers by Juan D. Colmenares F. B.S., Mechanical Engineering, Universidad de los Andes, 2012 M.S., Mechanical Engineering, Universidad de los Andes, 2014 Ph.D., Engineering, University of New Mexico, 2019 Abstract Turbulent mixing layers are a canonical free shear

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Jonathan Freund Mechanical Science Engineering UIUC

Aug 16, 2011  Shina, S., J. B. Freund, and V. K. Dhir, “Molecular Dynamics Simulation of Interfacial Tension of Ultra-thin Liquid Films on a Solid Surface,” Proceedings of 2001 ASME International Mechanical Engineering Conference and Exposition (IMECE2001), New York, November 11-16, 2001.

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Numerical Simulation of Fine Particle Solid-Liquid Two ...

Feb 18, 2021  B. Shi and J. Wei, “Numerical simulation of 3D solid-liquid turbulent flow in a low specific speed centrifugal pump: flow field analysis,” Advances in Mechanical Engineering, vol. 6, no. 2, Article ID 814108, 2014.

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Spray atomization simulation of bamboo kraft black liquor ...

Spray Atomization Simulation of Bamboo Kraft Black Liquor with High Solid Content at Splash-plate Nozzle . Yongjian Xu, a,b,c,d, * Shenglin Chen, a Xin Du, a,b and Xiaopeng Yue a,b,c,d. Increasing the solids content of pulping black liquor burned in a furnace is a development trend of the alkali recovery system in the pulp and paper industry.

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Home - Multiphase Flow Simulation Laboratory

Welcome to the Multiphase Flow Simulation Laboratory Multiphase flow is a flow of several phases. Examples include two-phase flows of gas-solid, gas-liquid or liquid-solid, and three-phase flows of gas-liquid-solid. It has direct applications in many industrial processes including riser reactors, bubble column reactors, fluidized bed reactors, dryers, and particle separators. Many ...

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Numerical simulation of mixing uniformity of composite ...

Download Citation Numerical simulation of mixing uniformity of composite solid waste and melt At present, solid waste is developing towards high value utilization. Premixed coal ash and waste ...

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Numerical simulation of granular mixing in static mixers ...

Jun 19, 2019  A static mixer is a fidelity engineered device for the continuous mixing of fluid/solid materials. To meet the requirements for mixing purpose, a proper design of the static mixer is important. In this study, we proposed various designs of static mixer based on the blade geometry. Six blade patterns including four twisted blades, four elliptical blades and other four combined geometries of two ...

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Numerical Simulation of Mixing Characteristics in the ...

tion in the ERE. €e numerical simulation of mixing charac-teristics for the ERE was performed based on the polymeric melt ‰ow characteristics through particle tracking applied. Dispersive mixing and distributive mixing characteristics were evaluated by using the statistical post-processor program of POLYSTAT (ANSYS, Inc., USA).

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Numerical Simulation of Flow in a Solid Rocket Motor ...

Department of Mechanical Engineering Istanbul Technical University Istanbul, Turkey . Abstract—A computational model is developed for the simulation of internal reactive fluid flow in a solid rocket motor with propellant burning surface regression. The model focuses on a 2D reactive flow in an end burning lab-scale motor. Chemical

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Numerical simulation of porous radiant burners under ...

H. Shabani Nejad et al./Scientia Iranica, Transactions B: Mechanical Engineering 25 (2018) 689{699 691 to the solid conduction and radiation heat transfer from the reaction zone, the temperature of the solid phase in the preheat zone is higher than that of the gas phase. This makes enthalpy transfer by convection from solid

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RESEARCH ON NUMERICAL SIMULATION OF FORMING

RESEARCH ON NUMERICAL SIMULATION OF FORMING PROCESS FOR SINGLE SCREW EXTRUDER Gou Yanan1,Zhao Peng1,2,Ning Tingzhou1* 1 College of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang 277160, China 2 School of Mechanical Engineering, University of Jinan, Jinan 250022, China E-mail: [email protected]

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Numerical simulation of jet mixing enhancement using ...

Sep 08, 2017  Numerical simulation of jet mixing enhancement using rectangular control jets Qitai Eri, Zhen Zhang, Rubing Zhang, and Ting Li Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 2017 233 : 1 , 111-124

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DETERMINING OF FLOW BEHAVIOR OF SOLID-GAS TWO

At high velocities (U0>approx. (Utr+1) m/s) and high solids circulation rate (G>approx. 200 kg/m2s) plug (dominant core) flow is achieved. Mixing occurs at lower G or lower U0. When mixing occurs, the hydrodynamics of the riser can be modeled by a core/annulus approach [3]. In the mixing mode, a dilute region with rapidly rising

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NUMERICAL MODELING OF FRICTION STIR WELDING

process making use of the numerical simulation often presents some limita-tions in terms of complexity of the pin geometry, non-linearity of the mate-rial behavior or ad-hoc boundary conditions. In this work, a fully coupled thermo-mechanical framework for the numerical simulation of the FSW pro-cess is

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Numerical simulation of convection and mixing in magma ...

Nov 03, 2006  [1] Magma convection and mixing, and periodic refilling, commonly occur in magma chambers. We show here that the presence of CO 2 in the refilling magma is a very efficient mean of inducing buoyant-driven plume rise and large scale convection. Numerical simulations performed with an appositely developed code for the transient 2D dynamics of multicomponent compressible to

get price

Finite Element Simulation and Performance Test of Loading ...

Mar 13, 2020  Simulation analysis and parameter optimization are performed for the loading and mixing devices of a self-propelled total mixed ration mixer. To reveal the three-dimensional movement of silage material under the action of the loading cutter roller, the latter is modeled using SolidWorks software. ANSYS/LS-DYNA software is used to simulate the process of silage cutting, which is

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Spray atomization simulation of bamboo kraft black liquor ...

Spray Atomization Simulation of Bamboo Kraft Black Liquor with High Solid Content at Splash-plate Nozzle . Yongjian Xu, a,b,c,d, * Shenglin Chen, a Xin Du, a,b and Xiaopeng Yue a,b,c,d. Increasing the solids content of pulping black liquor burned in a furnace is a development trend of the alkali recovery system in the pulp and paper industry.

get price

DEM-CFD Simulation and Experiments on the Flow ...

in the application of agitators, analyzed the influence of particle properties on mixing dynamics, and proved the reliability of this method in the simulation of rotating machinery through experiments. Li et al. [19] calculated the solid-liquid two-phase flow in the deep-sea mining pump by DEM-CFD coupling.

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Home - Multiphase Flow Simulation Laboratory

Welcome to the Multiphase Flow Simulation Laboratory Multiphase flow is a flow of several phases. Examples include two-phase flows of gas-solid, gas-liquid or liquid-solid, and three-phase flows of gas-liquid-solid. It has direct applications in many industrial processes including riser reactors, bubble column reactors, fluidized bed reactors, dryers, and particle separators. Many ...

get price